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Split the code to compute the last visible item in the new Windows Table into its own function. This is needed for keyboard vertical scrolling.

This commit is contained in:
Pietro Gagliardi 2014-11-15 20:36:56 -05:00
parent f11b1141fb
commit 93046dc868
1 changed files with 12 additions and 3 deletions
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15
wintable/main.c
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@ -148,6 +148,17 @@ static void repositionHeader(struct table *t)
t->headerHeight = headerpos.cy; t->headerHeight = headerpos.cy;
} }
// cliprect and rowHeight must be specified here to avoid recomputing things multiple times
static intptr_t lastVisible(struct table *t, RECT cliprect, LONG rowHeight)
{
intptr_t last;
last = ((cliprect.bottom + rowHeight - 1) / rowHeight) + t->firstVisible;
if (last >= t->count)
last = t->count;
return last;
}
static intptr_t hitTestColumn(struct table *t, int x) static intptr_t hitTestColumn(struct table *t, int x)
{ {
HDITEMW item; HDITEMW item;
@ -623,9 +634,7 @@ static void drawItems(struct table *t, HDC dc, RECT cliprect)
first = (cliprect.top / height) + t->firstVisible; first = (cliprect.top / height) + t->firstVisible;
if (first < 0) if (first < 0)
first = 0; first = 0;
last = ((cliprect.bottom + height - 1) / height) + t->firstVisible; last = lastVisible(t, cliprect, height);
if (last >= t->count)
last = t->count;
// now for the first y, discount firstVisible // now for the first y, discount firstVisible
y = (first - t->firstVisible) * height; y = (first - t->firstVisible) * height;